import { useState } from "react";
import { useForm, Controller } from "react-hook-form";
import { z } from "zod";
import { zodResolver } from "@hookform/resolvers/zod";
import { useExpensesContext } from "../ExpensesProvider";
import { DatePicker } from "@/components/ui/date-picker";
import {
  ResponsiveDialog,
  ResponsiveDialogContent,
  ResponsiveDialogHeader,
  ResponsiveDialogTitle,
  ResponsiveDialogFooter,
} from "@/components/ui/responsive-dialog";
import { Button } from "@/components/ui/button";

const newExpenseSchema = z.object({
  description: z.string().min(1, "La descripción es obligatoria").max(50, "Máximo 50 caracteres"),
  amount: z.number().positive("El monto debe ser mayor a 0"),
  dueDate: z.date({ message: "La fecha es obligatoria" }),
});

type NewExpenseFormValues = z.infer<typeof newExpenseSchema>;

interface NewExpenseDialogProps {
  open: boolean;
  onOpenChange: (open: boolean) => void;
}

export function NewExpenseDialog({ open, onOpenChange }: NewExpenseDialogProps) {
  const { createNonPeriodicExpense } = useExpensesContext();

  const {
    register,
    handleSubmit,
    control,
    formState: { errors, isSubmitting },
    reset,
  } = useForm<NewExpenseFormValues>({
    resolver: zodResolver(newExpenseSchema),
    defaultValues: {
      description: "",
      amount: 0,
      dueDate: new Date(),
    },
  });

  function handleClose(open: boolean) {
    onOpenChange(open);
    if (!open) reset();
  }

  async function onSubmit(data: NewExpenseFormValues) {
    await createNonPeriodicExpense({
      description: data.description,
      amount: data.amount,
      dueDate: data.dueDate.toISOString(),
    });
    handleClose(false);
  }

  return (
    <ResponsiveDialog open={open} onOpenChange={handleClose}>
      <ResponsiveDialogContent>
        <ResponsiveDialogHeader>
          <ResponsiveDialogTitle>Nuevo gasto</ResponsiveDialogTitle>
        </ResponsiveDialogHeader>

        <form id="new-expense-form" onSubmit={handleSubmit(onSubmit)} className="flex flex-col gap-4">
          <div className="flex flex-col gap-1.5">
            <label htmlFor="description" className="text-sm font-medium">
              Descripción
            </label>
            <input
              id="description"
              {...register("description")}
              placeholder="Ej: Ropa"
              className="h-8 rounded-lg border border-input bg-background px-2.5 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
            />
            {errors.description && (
              <span className="text-xs text-destructive">{errors.description.message}</span>
            )}
          </div>

          <div className="flex flex-col gap-1.5">
            <label htmlFor="amount" className="text-sm font-medium">
              Monto
            </label>
            <input
              id="amount"
              type="number"
              step="0.01"
              min="0"
              {...register("amount", { valueAsNumber: true })}
              placeholder="2500"
              className="h-8 rounded-lg border border-input bg-background px-2.5 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
            />
            {errors.amount && (
              <span className="text-xs text-destructive">{errors.amount.message}</span>
            )}
          </div>

          <div className="flex flex-col gap-1.5">
            <label className="text-sm font-medium">
              Fecha del gasto
            </label>
            <Controller
              control={control}
              name="dueDate"
              render={({ field }) => (
                <DatePicker
                  value={field.value}
                  onChange={field.onChange}
                  placeholder="Seleccionar fecha"
                />
              )}
            />
            {errors.dueDate && (
              <span className="text-xs text-destructive">{errors.dueDate.message}</span>
            )}
          </div>
        </form>

        <ResponsiveDialogFooter>
          <Button variant="outline" onClick={() => handleClose(false)} disabled={isSubmitting}>
            Cancelar
          </Button>
          <Button type="submit" form="new-expense-form" disabled={isSubmitting}>
            Crear gasto
          </Button>
        </ResponsiveDialogFooter>
      </ResponsiveDialogContent>
    </ResponsiveDialog>
  );
}